Woodworking shaper and the like



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n Ill/Illa i INVENTEJR ALVIN HAAE ATTY.

March 12, 1940. A. HAAs WOODWORKING SHAPER AND THE LIKE Filed April 7,1937 March 12, 1940. H 2,193,359

" woonwonxme SHAPER AND THE LIKE Filed April '7, 1937 3 Sheets-Sheet 23/ fi -T- 32 E-u-l l n Q L x /3 23 ii Z6 s INVENTIIIR ALVIN HAAS ATTY.

March 12, 1940. s 2,193,359

WOODWORKING SHAPER AND THE LIKE Filed April 7, 1937 3 Sheets-Sheet 3ELI- INVENTEIR ALVIN HAAE wfmy ATTY.'

Patented Mar. 12, 1940 UNITED STATES PATENT OFFICE 1 Claim.

My invention relates particularly to woodworking shapers although notlimited to this use alone. One feature of my invention resides in theprovision of a novel and desirable frame and 5 belt and pulleytransmission structure which is particularly adapted for woodworkingshapers, the invention contemplating a desirable arrangement of theframe structure with the transmission, enclosure of the transmission,and adjustment for proper belt tension.

Other features of my invention relate to a novel and desirableadjustment of the work supporting tables of such machines, and guide andguard devices thereof, all with a View toward convenience and safety inoperation. I

With these features in view my invention consists in certain features ofnovelty in the construction, combination, and arrangement of parts bywhich the said features and certain other features, hereinafterappearing, are effected all as fully described with reference to theaccompanying drawing and more particularly pointed out in the appendedclaim.

In the said drawings Figure 1 is a top plan view of a woodworking shaperembodying my invention;

Figure 2 is a side elevation of the same;

Figure 3 is an enlarged partial section on the line 3-3 of Figure 2; I

Figure 4 is an enlarged section on the line 4-40f Figure 2;

Figure 5 is an enlarged partial section on the line 5-5 of Figure 1;

Figure 6 is an enlarged partial section on the line 6-6 of Figure 2;

Figure 7 is an enlarged partial bottom plan view of the machine; and

Figure 8 is an enlarged partial sectional view on the line 8-8 of Figure5.

Referring to the drawings, l designates a hollow fiat base forming anenclosure 2, which base is horizontally disposed and open at the bottom.See Figures 2, 5 and 7. An electric motor 3 is secured on top of thebase by means of screws 4,

5 and, projecting upwardly from the base, is disposed on a vertical axisand has its vertical shaft 5 projecting downwardly into the enclosure 2of the base through an opening 6 in the upper wall of the base. Theopening 6 is closed by the body 50 of the motor.

A vertically disposed hollow generally tubular frame element or standardI is secured on top of the base at one side of the motor by means ofheaded screws 8 passing through parallel elon- 55 gated apertures 9through the enlarged base of this frame element and screwthreaded intothe top of the base I, thus affording adjustable positioning of thisframe element with reference to the base in a path toward and away fromthe motor 3 for a purpose hereinafter appearing.

The frame element or standard 1 extends upwardly from the base atoneside of the motor 3, and the enclosure thereof communicates with theenclosure 2 of the base 1 through an opening II in the upper wall of thebase, which opening 10 underlies the aforesaid frame element.

A tool carrying shaft l2 extends vertically within the frame element orstandard I in parallelism with the motor shaft 5 and is supported forrotation therein by means of vertically spaced bearings, generallydesignated at l3.

Secured on the lower end of the motor shaft 5 within the enclosure 2 ofthe base I, is a belt pulley l4, and a smaller belt pulley I5 is securedon the lower end of the shaft l2 within the enclosure 2. A transmissionbelt l6, within theenclosure 2, is trained over the pulleys I4 and l 5,so that the motor shaft 5 drives the shaft 12, it being observedthat'the association of the belt and pulley transmission with the baseand below frame element or standard I and abuts the body of the motor 3to separate the frame element from the motor against the belt tension.

A work table I8 is provided with a central bore I9 therethrough disposednormal to the usual upper or work supporting surface 2| thereof, and isprovided with a downwardly projecting bored hub formation 22 extendingthis bore. See

I Figures 2, 3 and 5,

The work table I8 is slidably engaged by means of the bore l9 upon theupper portion of the frame element or standard I for vertical adjustmentof the work table. The frame element or standard 1 is provided with aradial lug 23, and a vertically disposed screw 24, having a manipulatingknob 25, is rotatably mounted on the lug 23 and is screwthreaded througha radial lug 26- on the hub formation 22, to the end that the work tablemay be conveniently adjusted Vertically on the frame element 1.

The hub formation 22 is provided with a longitudinal slot 21, and aheaded set screw 28 extends through this slot and is screwthreaded intothe frame element 1, to the end that the work table may be clamped invertically adjusted position on the frame element, the engagement of theset screw 28 in the slot 21 serving to prevent rotation of the worktable.

The work table is thus conveniently adjustable vertically.

The upper end of the shaft I2 is extended upwardly by an extension shaft29 which extends above the work surface 2i of the work table and carriesa suitable rotary cutter tool assembly, generally designated at 3|, foroperation on work passed over the work surface 2! in a usual manner asthe shafts l2 and 29 are rotated by the motor 3.

The bore IQ of the work table I8 is counterbored at the work supportingsurface 2| thereof, as designated at 32, and a circumferentiallyflangedannular member of right angle radial section, comprising acylindrical portion 33 and a circumferential flange portion 34 at oneend thereof, is reversibly mountable in the counterbore 32.

When the aforesaid annular member is mounted in the counterbore 32 withthe cylindrical portion 33 projecting upwardly, as shown in Figure 3,this cylindrical portion projects above the work surface 2! and isengageable with work on the work surface to limit movement'of the worktoward the cutter tool axis. When the aforesaid annular member ismounted in the counterbore 32 with the cylindrical portion 33 projectingdownwardly, as shown in Figure 5, this cylindrical portion is noteffective as above described, the annular member serving in either caseto exclude chips from entering the bore l9.

An arm 35 is secured, as designated at 36, on

.the work table is adjacent one edge thereof and extends horizontallyspaced above the work supporting surface 2!. The extending end of thearm 35 is provided with a vertical bore 3'! 'arranged concentricallywith the shafts l2 and 29. A cylindrical guard member 38 is slidablyengaged for vertical adjustmentin the bore 31 is secured in verticaladjustment on the arm 35 by means of a set screw 39 screwthreaded in thearm 35 and radially engaging the guard member 38 to adjustably positionthe same in the bore 31.

The arm 35is provided with a second vertical bore 4!" arranged adjacentand in parallelism with the bore 31 and the axis of the shafts l2 and29. A tubular member 42 is slidably engaged in the bore 4!, and a setscrew 43, screwthreaded in the arm 35, radially engages the tubularmember 42 to adjustably position the same in the bore 4!.

A work hold down member 44 is provided with a shaft 45 which is slidablyengaged in the tubular member 42. A coiled compression spring 46encircles the shaft 45 below the tubular member 42 and is operativebetween this tubular member and the hold down member to yieldably urgethe hold down member downwardly toward the work surface 2| tohorizontally position work thereon. A stop, indicated at 41, is mountedon the upper end of the shaft 45 and is operative between the tubularmember 42 and the hold down member 44 to limit downward movement of thehold down member toward the work surface 2| in opposition to the spring46.

Both the guard member 38 and the hold down member 44 are thusconveniently adjustable normal to the work surface 2i and longitudinallyof the tool carrying shaft to meet various conditions, the springpressed range of the-hold down device being constant in alladjustmentsthereof.

The work table i8 is provided with a suitable adjustable work guide,generally indicated at 48, which does not require detailed descriptionfor present purposes.

In order to lock the shaft i2 against rotation for the change ofcutters, the shaft I2 is provided with radial bores 49 which areregisterable with a bore in the wall of the frame member I, to the endof engaging a stud 52 in the bore 5| and one of the bores 49 and thustemporarily locking the shaft 52, as shown in Figure 4.

Having thus described my invention, I do not wish to be limited to theprecise details described, as changes may be readily made withoutdeparting from the spirit of my invention, but hav ing thus described myinvention, I claim as new and desire to secure by Letters Patent thefollowing:

In a device of the character described, the combination of a flathorizontally disposed base forming an enclosure, a hollow frame elementsupported thereby and extending upwardly therefrom, a work table spacedabove said base and supported on said frame element, an electric motorsupported on said base and extending axially upward therefrom, arevoluble driven shaft carried with said frame element-and extendingupwardly therein from said base, a belt and pulley transmission withinthe enclosure of said base and operatively connecting the shaft of saidmotor and said driven shaft, and means for effecting horizontaladjustment of said frame element on said base relative to said motor.

ALVIN HAAS.

